Steel Structure, Warehouse, Workshop manufacturer / supplier in China, offering Modular & Prefabricated Steel Structure Building of Steel Roof Extension on The Top Floor of Workshop Warehouse for Factory, Modular & Prefabricated Steel Structure Building of Steel Structure Warehouse with Mezzanine Floors for Factory, Modular & Prefabricated Steel Structure Building of of Heavy Steel Structure Industrial Factory Warehouse with Crane Beams & Lattice Columns and so on.